The reason the deal didn’t go down between Twitter and Camera+? Apparently the international Camera+ team did not want to move to San Francisco. Twitter’s co-founder Jack Dorsey led negotiations with Tap Tap Tap, according to sources:

Twitter executives held several meetings with Camera+ developer Tap Tap Tap, said the people, who asked not to be identified because the talks were private. The talks broke down before Twitter could make an offer because the startup’s far-flung workforce was reluctant to relocate to San Francisco, they said. While 10 employees are already based there, Tap Tap Tap has 20 others in Austria, New Zealand, Spain and elsewhere.